Vapor Separator Tank Filter Cleaning - Moderated Discussion Areas

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Author Topic:   Vapor Separator Tank Filter Cleaning

anthonylisske posted 05-01-2011 12:56 PM ET (US)
I read a thread on CONTINUOUSWAVE that dealt with a Yamaha OX66 EFI engine bogging down, and the thread spoke about the need to replace the vapor separator tank (VST) filter. Long story short: I read, learned, and waited.
Last week, engine acted up under load while powering up. Ah ha! My moment to strike! With out changing the online filters, or touch anything else on the engine, I pulled the VST tank bottom off, grabbed the little filter and scrubbed it clean with Murphy oil soap, dropped it back in, and 45 minutes later she was cruising like a charm. All done while she was sitting on the mooring.
Now the reason I post is multifold:
1. To thank the site and posters for keeping me up to date.
2. To validate for others that the "hype" is true about VST filters. (it was clogged beyond belief)
3. To let folks know that doing it on a V6 2 stroke is easy enough for a regular Joe to do.
That's it and happy boating. I had buddies that lost weeks of fishtime and buckets of dough that had the same problem. 45 minutes and 3-cents worth of soap and an old toothbrush. Can't beat the price.

jimh posted 05-01-2011 02:44 PM ET (US)
My mother always had a bottle of Murphy's Oil Soap on the shelf in the laundry room. I have not heard that brand mentioned in years--decades!
anthonylisske posted 05-01-2011 05:12 PM ET (US)
I actually got it out of my parents pantry!,lol. (no kidding)
Worked like a charm and it will be part of my annual spring routine.
anthonylisske posted 06-28-2012 07:36 PM ET (US)
Just as a follow up. Just had same issue, did the same thing outlined in previous post and fixed it up immediately.
That is about every 12 months.
jimh posted 06-28-2012 08:21 PM ET (US)
On my Evinrude E-TEC V6 3.3-liter there is a fuel pump and vapor separator assembly. The return hose from fuel injector distribution attaches to an inlet on the vapor separator. That inlet contains a filter. It has been reported that the filter can become clogged. If the filter is clogged the result is an increase in pressure in the high-pressure fuel distribution to the injectors. This can affect engine running conditions. Some knowledgeable mechanics who work on the Evinrude E-TEC have recommended check the filter once a year.

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Author	Topic: Vapor Separator Tank Filter Cleaning
anthonylisske	posted 05-01-2011 12:56 PM ET (US) I read a thread on CONTINUOUSWAVE that dealt with a Yamaha OX66 EFI engine bogging down, and the thread spoke about the need to replace the vapor separator tank (VST) filter. Long story short: I read, learned, and waited. Last week, engine acted up under load while powering up. Ah ha! My moment to strike! With out changing the online filters, or touch anything else on the engine, I pulled the VST tank bottom off, grabbed the little filter and scrubbed it clean with Murphy oil soap, dropped it back in, and 45 minutes later she was cruising like a charm. All done while she was sitting on the mooring. Now the reason I post is multifold: 1. To thank the site and posters for keeping me up to date. 2. To validate for others that the "hype" is true about VST filters. (it was clogged beyond belief) 3. To let folks know that doing it on a V6 2 stroke is easy enough for a regular Joe to do. That's it and happy boating. I had buddies that lost weeks of fishtime and buckets of dough that had the same problem. 45 minutes and 3-cents worth of soap and an old toothbrush. Can't beat the price.
jimh	posted 05-01-2011 02:44 PM ET (US) My mother always had a bottle of Murphy's Oil Soap on the shelf in the laundry room. I have not heard that brand mentioned in years--decades!
anthonylisske	posted 05-01-2011 05:12 PM ET (US) I actually got it out of my parents pantry!,lol. (no kidding) Worked like a charm and it will be part of my annual spring routine.
anthonylisske	posted 06-28-2012 07:36 PM ET (US) Just as a follow up. Just had same issue, did the same thing outlined in previous post and fixed it up immediately. That is about every 12 months.
jimh	posted 06-28-2012 08:21 PM ET (US) On my Evinrude E-TEC V6 3.3-liter there is a fuel pump and vapor separator assembly. The return hose from fuel injector distribution attaches to an inlet on the vapor separator. That inlet contains a filter. It has been reported that the filter can become clogged. If the filter is clogged the result is an increase in pressure in the high-pressure fuel distribution to the injectors. This can affect engine running conditions. Some knowledgeable mechanics who work on the Evinrude E-TEC have recommended check the filter once a year.